Selecting control device



Jan. 4, 1949, E. A. DERUNGS SELECTING CONTROL DEVICE Filed 001;. 27,1943 2 Sheets-Sheet 1 /l/l/Ailll llli 7581a; 73 69 6720 0 113827 amaze.IDer' 12 9 Patented Jan. 4, 1949 2,457,876 stsiLE'dTifiGbon'moflniivion EFneS't miilitfisenennigs, LeLocle, 'Sviritieilanfl mums InSwitzerland ctober 9 19 Patent expii'es Octo'b" 931962 1 9,:thedevi'cezlfl ebeinglifixedto'a movable member The member 9 runs over aroller l2 to which" a Sht'ffi'fl5 pivoted onithebearingsi l6 fixed tothen movable member llfithesecams having openings l3 and cut-outs l9corresponding to pushers 20. The cams ll, besides, comprise two catches2| and zz whichiwhen the camsare inclined in ba'se lisbsel'ectingca ms.I! enter groovesl3altzof-the The selecting:contro1;-;device according toixthe-wlfl the one or the-other 'direction; --bear against themovablemeniber I LE Furthermore;each selecting cam H, on both sides hasshoulders 23and 24-f invention is characterised in -tha-tit;comprises.threegroups ofv organs; a first one mountedqon -astationary part, for:imparting gto the (organs-pf:- the second, movable. group different:pesitionsg which i are transmittedto the' :third group of-1 0P3? 1 Inapreferred embodimentiof the selectingfion-i '20- trol device, theorgansof- :th'e: second'group lexecute an alternating,.rectilineartranslatory-;mo-- tion relatively to the first; lgxgoup;comprising-:;theemeans provoking the ::sa-id movement: The sec-,

lengthened wane inclined Surfaces 2 5 2 E forming one of the Walls ofthe groovsfl n in which" of the grooves is constituted by arc-shapedsur- The selecting i cams? 1 1! entering the grooves w ofthelmovablez'membeni I- pivots aroundan axle 0nd group has l ne'cams ofa-nurnber'equala2s dl=traversin memberil Ii rAbinifliforrns'the'axleiiforlrbalance wei'ghts' t43lrdisp'osed on: each side' of' to that of thechange speedlgearsa These-teams;- are pivoted on a -mova ble'member'andeare :dise

placed in the one on the othen directionlby push-.- ers formingpar-t oithe firs-tegroup and-;,against;-

certain gearboxes for vehicles, it-' is .important.- that only onechange speedwgear "canibe operated ata time, a specialalocking.devicecan,be-provided in-a preferred embdclimentso that, whatever thewmaybe, it is impossib1e to displacemore thana one cam at a time and,Whenacam is already-v; in working "position, .also impossible :todisplacea any of the other-cams; L g

The accompanying gerawmgs illustrate? by ivaiy of example only} anelectricallyQcontrolled em bodiment of they selecting -contiiolr device.accord-i ing-tothe invention I y l Fig. 1 is a partial sectionalonga-theline rI -I of";

Fig. 2 whichisa horizontal-section;along lline motheriby'amylinderWitch-smallerdiameter; The: whole'isaplaced'in a bore 54 traversingithemov-: able member; :I l: and thevse'leicting cams-1 I The manner; ofoperation of this locking device is: dew

II-' II ofFiglllQ n Fig. 3 is' a vie'w analbg ous to that'imFi'g; '1but. in anotherworkingposition I v V Fig; 4 'illustrat'esfa modifieddetail of the first" group Morgans) V I I Figi-5 isa'section-thrbuglfifa"lockingdevicei om a greate'nscale; F I

Referring nowfto Fig'i' 1 to"3, to the ase s am ewamm'agnet I "isfiirdwhos''mo asieedre 8 connected to air-attachment"- l u we pmfimeiatw w"Lil the selecting lcams' l LE Th'erlbalanc'e-l weights lliir fofr-ea'ch selecting 1 camk I'll are :interconnectedsby mins 6 Iftraversing.1-;cut.-* 1 which the-selecting. cams zare returnei; As;-:-in. j buts=l3bflthe'fcains IT.

The" rcontrol device of rthe -snon illustrated machin'e' to. whichlbelongsithe selecting? fcontrol'device possesses transmission levers;;".66 all ofwhich: pivot "around E an: axlehfizya the Theads: @of:these? number of selecting came of the {control device 5m ve' s engiforksflfi form p Of Co trolmeans for the? change speed tgears.

Pins-29 'andsfl 0. entering the zgroovesa 21;; 28 :of-

theicamsal I. *are fixed =to these;transmissionslevers 64,265,166;

Ther illustrated: :selecting .ilcontrm device? com prises twotlockingdevicesz 1 The first one: (FigLrB); is fconstituted rby two groups P of.':cylinders '4 8 rand 52 respectively and ballsa'4'lizd9 -aridr5 I; 53mesjse'cw tively, 1 these a'groups'irbeing separated 5 lfromreachscriberlate'r;Jon;

lating l'aboutv *anexle 553:: ?'and 'ending in a nose :56

The second locking device has-a :pawl 55 *osc'ib selcting carn-il, thisnotch corresponding to' the rhe'netcirs of" neutral positioniof-thefcanril H 1 ams sane selecting canfcoiresponds td one "or its 3 workingpositions while, for the other working position, the nose 56 bearsagainst the catch 22 (Fig. 3). Each pawl is under the influence of aspring 60.

The base 6 is fixed. It carries three selecting cams I! each operated bya set of means described later on. Only the set belonging to one cam I1is described, the sets of the other cams being identical.

These sets, belonging to the first group of organs, comprise two pushers20 lying in front of the cut-outs I9 of the selecting earns 11. Thesepushers are fixed to the movable cores 6'! and 68 of smallelectromagnets 69 and 10 operating them. The movable cores 61, 68 aresupported on elastic stops each comprising a rod'l3 fixed to the movablecores. Furthermore, for each electromagnet a spring is compressedbetween the bottom of a sleeve 8i supported on a shoulder 83 of thefixed part 12 of the electromagnets and a socket 80 held in place by thehead 82 of the rod i3.

All these pieces lie in a cylindrical hole of the fixed part 12 of theelectromagnets. The shoulder 83 and the disc 84 limit the possibilitiesof displacement of the parts 80', 8!.

} Operation In the described example it is a question of displacingthree change speed gears of a vehicle gear box, the change speed gearsbeing controlled by levers endingin the forks 16.

The series of operations produced by the selecting control device is asfollows:

1. Annulment of all preceding positions of the cams,

2. Putting the cams into the positions according to the disposition ofthe remote control, under the control of a first locking device,

3. Closing a second locking device of each cam,

4:. Actuating the control levers for the change speed gears according tothe disposition given to the selecting cams by the remote control.

Displacing each of the change speed gears in the one or the otherdirection is accomplished by the movements of the cylindrical head 85according as the corresponding lever 64, 65' or 65 oscillates in the oneor the other direction; each change speed gear is disengaged when theforks 16 are in the middle of their movement. When all change speedgears are disengaged, the gear box is on the neutral point, that is, outof operation; this occurs every time the electro-magnet 1, acting by itsmovable core 8 upon the member 9 and the attachment l0, attracts allselecting cams I! by 'means of the movable member II, that is, when thereturn movement of the latter takes place.

The return motion to the neutral position of the levers 64, 65, 66 takesplace because, whatever the position of the selecting cams may be, thearc-shaped surfaces 3| and 32, whose centre lies in that of the axle 4|,bring the pins 29 and 30 back into the position shown in Fig. 1.

In proportion as the movable member H approaches the base 6 the cams I!come into contact with the pushers 20. At the same time the pawl 55bears against the base 6 and takes the position shown in Fig. 1, Allselecting cams H are released and can take the position determined bythe respective position of the pushers 2|].

At the same time when the electromagnet l was excited, these pushershave likewise been brought into place by one of the electromagnets 69,i6 controlling the movable cores 6'', 68.

When the electromagnets 69, 16 are not excited, the movable cores 61, 68are in the middle of their stroke. To this effect and for each core thesleeve 8| bears against the shoulder 83 under the pressure of spring 15which presses the socket 80 against the head 82. In this position thereis no play between the head of the rod 13 supported on the socket 80 andthe end face of the movable core 67 or 68 respectively making contactwith the bottom of the sleeve 6|.

If, for instance, the electromagnet ill of a cam I1 is excited, themovable core 68 takes the position represented in Fig. 3, moving bymeans of the head of the rod 13 the socket 80 which compresses thespring 15 while a space is formed between the bottom of the sleeve 8!and the end of the movable core 68.

As soon as the excitation of the electro-magnet l8 ceases, the spring 15moves the socket 89 back towards the disc 8 t, these pieces, therefore,take again the position shown in Fig. 1. From this it results that, assoon as the excitation of the electromagnets 69, 10 ceases, the movablecores 6?, 68 are immediately brought back to their middle position,which is always exactly the same and identical for all movable cores.

This elastic set operates also in the inverse sense. If, for instance,in the position shown in Fig. 3 and on excitation of magnet l, the upperpusher 26 receives a shock from the corresponding cam l'l, it is drivenback by this cam ll moving to the left, because the lower pusher 28 isin an advanced position and thereby forces the cam l! to remain in theoblique position shown in Fig. 3. On this occasion the upper pusher 20drives the movable core 61 back which, in its turn, moves the sleeve 8|to the left; this sleeve presses the spring 15 against the socket andthe disc 84 while the head 82 of the rod 13 advances in the spaceprovided on the socket 86. The member H being now in its outermostleft-hand position the change speed gear belonging to lever 65 isdisengaged. If this same change speed gear is to be reengaged, theexcitation of magnet I only must be removed, the member 1 I then goesback to the right, the position of the whole as shown in Fig. 3 beingthereby reestablished.

If, however, the speed belonging to lever 65 should not only beannulled, but the speed belonging to lever 66 established, theexcitation of magnet 10 belonging to lever 65 is removed and magnet lflbelonging to lever 66 excited, so that, on the member ll moving to theleft, cam ll of lever 65 is brought into the position shown in Fig. 1and cam l'l'of lever 66 into the inclined position illustrated in Fig.3. Now, the speed belonging to lever 65 is annulled and when theexcitation of magnet l is removed the change speed gear for the speedbelonging to lever 66 is engaged, that is, a new speed is established.

When the cam l1 belonging to lever 66 has been brought into the inclinedposition shown in Fig. 3 the cams belonging to the other levers B4 and65 have been locked by the device shown in Fig. 5 in the followingmanner:

The hole 86 of reduced diameter provided on the cam I! belonging tolever 66 is displaced with regard to the ball 41, driving this latterback. Ball 4! thereby moves cylinder 48 and ball 49 towards the top sothat the'latter enters'the hole of reduced diameter in the middle cam iiand pushes cylinder 50 back. In this way the middle cam i1 is locked andthe ball 51, the cylinder 52 and the ball 53 displaced towards the top,ball 53 thereby entering the hole 8'! of reduced diameter :innthedipper? camv-el 1 aeriaineriueane latter Thus, :Ton'lyithe:lowermosiricamis: l1 beltinzi'tig lever 86 was allowed to take theinciiried tpos tionrrshowndnFigs3grwhileithepitwmcthers'are- 5h sabfzbrgsitsiishuwn th i fniddleipositionxshown in: I Fi liwlwhiciricornespondsit .t tion of the respectivecchangeaspeewfgears 5" i I Ifrzzbyaaccidentxtwo.relctromagnets dodging-v,totwozdifierentiseleotinggeamsiilTwe'r simuit'a ,th'ei otli regardtherefor m; and, on: the othems'ide mama-plum 6? amount: thbiz'ct'miisralwaysdnzindifirent 1e quilib' rium ebotlifundehtdeflect?oiagravitation'riandio I 1 an; eruerimmrcertne tiow rspusherw las aback-1'. against the spring 1081?: Asesoon'rasiitlrevelectriccurrentafi interrupted? theslowerxspring which is zfit'along-tztheipinsuZQJF-and 30,r:thereby moving,izito mg conipressedeactstmponthe:rldwrs core toibring 'iti thBi'hTIlQllfiIfdiiFGSiitiUHil'Inrordersthat aispc'ed ina be estabiishedzby oneiofzthedlevers6433electromagnet I being no longe e eitee-, mne springsa 33 whichhave?!)eeniicorniirssed during the attraction of the movable member ll,move the latter towards' the -right and's the pawl 55,

moved in theanticloplgwisedireetiorr by the. spring-i ygdifleintposititins =b 60enga'ges one of the notches 5L or ia-iqnevenrz; asrepresentedin Fig. 3,.the catch, engine cam H. The notch?!"corresponds'tothenieutral, the notch 58-rand the catch 22213050218 ofthe *aetiv positions-:oi the ,selectingflcanr'sl-lzss The mumsfitanttdn'gbflthe different positions.fthereof on the imeetiri'gipfisaidsecond grou p with said first groupofithe electromagnetV1 0 istonly :interruptediaftem the locking-hastaken place,

Ifazone-:ofifche ,selectinggpams;r '5

inclinediposition ,e., gcthat, showman Figiis lithhtbackinto theposition which it oceupies' whemthes." heEdtiIflQibears sagairi'strthe'shoulder .i Ol l Both corestbeinglthenziin zthisrtpositiongithe 'selectingi cain'zzil dsi'ineits aneutralzpositiom What. I claim is:

i timeselecting-auntsoi eevrce; fcoritrol ineans for-chair 'sspee'd{gearsi a stationary par-t, afirstf groii or m stersmoanterrromsaiestationary q pare} dt'm'd'igroup :m 'niuers mevabie mwaid first-groupg said=firstf groupiincliidifig idriv ihg means foreffecting alterattrthegenutnrnthe ialternatingcrectiiinear inove menti msaid asecond-group; iand: a third' 'gr'oup of members movable by and independence upon the isgif ia ne s e istc,beestamished by displacean@position eon-fsaiursecimd igrOuPEto aGtuaJtei: said ing the fork 1Bof onet of,the ,.chang e speed gears e. g. by means ofthe"lever"6'5""th'efoperation of the latterit'akes place as follow Thepin garnetsing e beeiii since .theibeginnin'g otirith,camconuthetbottomi of k h g when. along the .camiiwhiler he pin' iic'an freely leave the other groove 28.

The change speed gears of the other speeds remain in their neutralposition owing to the fact that the corresponding selecting cams beingin their median position can freely pass between the pins 29 and 30until their shoulders 23, 24 strike against the latter.

Until the next excitation of the electromagnet I, the springs 33maintain all the control levers 5 B4, 65, 66 of the change speed gearsin their respective positions by pressing the selecting cams I! againstthe pins of the levers '54, 65, 65 both for the neutral position and theworking position.

The balance weights l3 serve for the static balancing of the selectingcams in the period between the moment when the cams leave the pushers 20and the moment of locking by the pawl 55. The cams are pivoted on theaxle ll and the balance weights 43 on the axle 42.

While the balance weights 43 to which the pins 6| are fixed tend torotate the selecting cams in one direction by pressing upon the upperrim of the notch I3, the same cam is under the influence ai seleiitiiigrcontrloltidevice control means'i:

' magnum e, speedztgearsfia stationary spartfrsa first? tomemberstmounted'iton said stationaryi 45;i5part, ;a;second group ofmembers including as movab gnembehrseletinggiearnstpivotedvona saidmovable mf'e'niberand movable: into :difierent pos'i-Ik tions, saidfirst group of members including means effecting alternating rectilineartranslatory movement of the second group and for moving said cams intoany one of the difierent positions thereof on the meeting of said secondgroup with said first group at the end of the alternating rectilinearmovement of said second group, and a third group of members movable byand in dependence upon the position of said cams to actuate said controlmeans.

3. A device as claimed in claim 2 wherein said cams are provided withgrooves having portions of the walls thereof disposed concentric withthe pivotal axis of the cams, the members of the third group havingportions engaged in said grooves.

4. In a selecting control device, control means for'change speed gear, astationary part, a first group of members mounted on said stationarypart, a second group of members, said second group including a movablemember and selecting cams pivoted on the movable member and movable intodifferent positions, said cams having grooves therein, said first groupof members including driving means for efiecting rectilinear movement ofthe second group of members and for moving the selecting cams intodifferent positions, at third group of members including parts parts. I

6. A device as claimed in claim 4 whereinisaid third group of members isconstituted by levers pivotally movable about an axis, said grooveengaging parts being carried by said levers and constituted by pinsthereon.

7. A device as claimed in claim 4 characterized by the provision ofbalance weights coacting with said pivoted cams.

8. A device as claimed in claim 4 characterized by the provision ofmeans effective to prevent movement of all cams except the one disposedin operative position.

9. A device as claimed in claim 4-whereinpsaid movable member and camsare provided .Wlth. passages movable into registration and membersmovable in said passages and effective .upon movement of one of the camsto operative position to lock the other cams against movement.

10. A device as claimed in claim 4 wherein the movable member and camsare provided with passages movable into registration, a series ofspherical and cylindrical members arranged in alternating succession insaid passages and operable when one of said cams is moved to oper- Iative position to lock the remaining cams. against movement.

11. A device as claimed in claim 4 characterized by the provision oflocking means engageable with each cam to maintain the latter in apredetermined position and disengageable from the of said movable meme.v

cam in a certain position ber.

12. A device as claimed in claim 4 characterized by the provision ofspring control locking means engageable with each cam to maintain thelatter in a predetermined position and disengageable from thecam in acertain position of said movable member.

13. A device as claimed in claim 4 wherein said first group of membersincludes abutment-like partsadjustably mounted and operable to determinetheposition of said cams.

14. A device as claimed in claim 4 wherein said first group of membersincludes pushers for determining the positions of the selecting cams inone; position of said movable member, and means normally maintainingsaid pushers in an intermediate position.

,15. A device as claimed in claim 4 wherein the first group of membersincludes electromagnetically actuated pushers movable into difierentpositions to determine the positions of the cams.

16. A device as claimed in claim 4'wherein said first group of membersincludes electromagnetic means for actuating the movable member.

17. A device as claimed in claim 4 wherein said first group -of membersincludes combined electromagnetic and spring means for actuating themovable member.

ERNEST ALPHONSE DERUNGS.

REFERENCES CITED The following references are of record in the file ofthis patent:

1 UNITED STATES PATENTS Number Netherlands June15, 1940

